Imitation-ice surface and process of making it.



JOSEF WEBER, 0F ESSEN-ON-THE-RUHR, GERMANY, ASSIGNOR TO THE FIRM OF KRISTALLIT SPORTEIS-GESELLSCHAFT M. B. BL, OF ESSEN-ON-THE-RUHR, GER- IMITATION-IGE SURFACE AND PROCESS OF MAKING IT. i

Patented May 21, 1916.

MANY.

1 181 275 Specification of Letters Patent. No Drawing. Application filed October 18, 1913 Serial No. 795,879.

latter, in some cases, other suitable sub- ,stances were added. The masses thus produced however possessed rather dull surfaces and were not sufficiently smooth or glassy for skating and similar purposes. Furthermore it has been suggested to moisten such surfaces with hot water and to render them smooth or slippery by brushing them mechanically. Nevertheless hitherto it has not been possible to obtain a smooth or slippery surface which was the equivalentof an ice surface.

. The object of the present invention is to devise a process for the manufacture of smooth or slippery and clear masses which are quite similar in their appearance an qualities to ice, and therefore suited more particularly for skating.

In carrying out the invention salts of thiosulfuric acid are employed, especially thiosulfate of sodium, which is liquefied by melting it in its water of crystallization and to which, preferably, borax is added. It has been found that the latter salt dissolves in the liquefied thiosulfate to .a relatively high degree (up to about 25 per cent). Such addition of borax has been found to have a favorable influence upon the durability and the smoothness or slipperiness of the skating surface.

The process may be carried out in the following manner: Sodium. thiosulfate is mixed with a certain amount of borax and this mixture is liquefied by heating. Then this fluid mass is poured out or cast upon a suitable base, vfloor or surface which preferably is not perfectly smooth, but slightly roughened. The whole ofthe casting may be efiected. at one time but preferably several castings are performed if desired in such a manner as to produce superposed layers. When cooled and set, this mass has a surface which may be said to be the equivalent of an ice surface and which will not suffer damage or have its slipperiness or glassy character deteriorated by heat during the summer season.

What I claim is:

1. A process for manufacturing smooth and slippery imitation ice surfaces which 'consists in pouring a heated mass containmg sodium thiosulfate and borax upon a suitable foundation and allowing the mass to solidify.

'2. A process and slippery imitation consists in heating mixed with borax and casting the resultant saline mass upon a suitable foundation.

3. A process for manufacturing smooth imitation icc surfaces which consists in liquefying by heating sodium thiosulfate, mixed with borax, in its crystallization water, casting the liquid saline mass upon a suitable foundation and cooling same.

4-. A process for manufacturing smooth and slippery imitation ice surfaces, which consists in liquefying by heating sodium thiosulfate in its Water of crystallization, dissolving borax in the resultant liquid, pouring the liquefied mass. on a suitable foundation and allowing the mass to congeal by cooling.

5. An imitation ice SllIfflCGfftI'fi-Ck or rink consisting of a mass containing sodium thiosulfate and boraX.

In testimony whereof I afiix my signature in presence of two witnesses.

JosEF WEBER. [n 5.

Witnesses: v

ALBERT Norse, JULIUS FESTNER.

sodium thiosulfate 

